Solar magnetic tracking. I. Software comparison and recommended practices

C. E. DeForest, H. J. Hagenaar, D. A. Lamb, C. E. Parnell, B. T. Welsch

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)

Abstract

Feature tracking and recognition are increasingly common tools for data analysis, but are typically implemented on an ad hoc basis by individual research groups, limiting the usefulness of derived results when selection effects and algorithmic differences are not controlled. Specific results that are affected include the solar magnetic turnover time, the distributions of sizes, strengths, and lifetimes of magnetic features, and the physics of both small scale flux emergence and the small-scale dynamo. In this paper, we present the results of a detailed comparison between four tracking codes applied to a single set of data from SOHO/MDI, describe the interplay between desired tracking behavior and parameterization tracking algorithms, and make recommendations for feature selection and tracking practice in future work.

Original languageEnglish
Pages (from-to)576-587
Number of pages12
JournalAstrophysical Journal Letters
Volume666
Issue number1
DOIs
Publication statusPublished - 1 Sept 2007

Keywords

  • Sun : magnetic fields
  • MICHELSON DOPPLER IMAGER
  • NETWORK
  • REGIONS
  • MAGNETOGRAMS
  • PHOTOSPHERE
  • NANOFLARES
  • PROJECT
  • BIPOLES
  • FLUX

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